Hello can you help me answer this:
Using linear regression determine the absorbance/concentration relationship for the dye.
[dye] = ___ x A
Here's my data:
Molar concentration of the dye stock solution: 2.52e-5 mol/L
Operating Wavelength: 629 nm
Solutions
(Dilutions) Absorbance (A)
(a.u.)
1 0.078
2 0.200
3 0.407
4 0.840
Molar concentration of the bleach stock solution: 0.134 mol/L
Solutions
(Dilutions) Concentration
%
Experiment 1 0.25
Experiment 2 0.50
Experiment 3 1.0
Experiment 1
Time
(s) Absorbance
(a.u.)
21 0.950
31 0.896
41 0.862
51 0.822
61 0.787
71 0.751
81 0.715
91 0.684
101 0.654
111 0.624
Experiment 2
Time
(s) Absorbance
(a.u.)
30 0.796
45 0.688
60 0.592
75 0.506
90 0.433
105 0.369
120 0.316
135 0.268
150 0.228
165 0.193
Experiment 3
Time
(s) Absorbance
(a.u.)
30 0.536
45 0.383
60 0.269
75 0.184
90 0.124
105 0.079
120 0.060
135 0.055
150 0.054
175 0.053
